1.14
Sketch below is the graph of f(x) = x²+ax² + bx+c. The x-intercepts of fa
(3:0) and M, where M lies on the negative x-axis. K(0;-3) is the y-interce
. Mand N are the turning points of f.
M
K (0:-3)
1.14.1 Prove that the equation off is given by f(x)=x³-x²-5x-3
1.14.2 Calculate the coordinates of N
1.14.3 For which values of x will f(x) 1.14.4 For which values of x will ƒ be increasing?
1.14.5 For which values of x will ƒ be concave up?
​